<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>016-js语法规则.html</title>
</head>
<body>
	<div id="box"></div>
	
</body>
<script>
		// var A=1;
		// console.log(a);
		// var oBox=document.getElementById('box');
		// console.log(oBox);
		function sayHi(){
			console.log("hi");
		}
		/*
		
		var b123=2;
		console.log(b123);
		var borderTopColor="red";
		console.log(bordertopcolor)
		var vr=2;
		console.log(vr);
		var box='box';
		*/
	</script>
</html>